Russian Journal of Inorganic Chemistry, Tập 7,Phần 2British Library Lending Division with the cooperation of the Royal Society of Chemistry, 1962 |
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... niobium complex on the salicylic acid con- centration : [ Nb ] = 1.3 × 10 ′′ 3 M , pH 2.5 - 3 . Bases : pyramidon ( 1 ) , antipyrine ( 4 ) , quinine ( 2 ) , codeine ( 3 ) , and pyridine ( 8 ) . Fig . 8. Absorption spectrum of a ...
... niobium complex on the salicylic acid con- centration : [ Nb ] = 1.3 × 10 ′′ 3 M , pH 2.5 - 3 . Bases : pyramidon ( 1 ) , antipyrine ( 4 ) , quinine ( 2 ) , codeine ( 3 ) , and pyridine ( 8 ) . Fig . 8. Absorption spectrum of a ...
Trang 1421
... Niobium on pH We studied the extraction of niobium by 4 % 8 - hydroxy- quinoline in isopentyl alcohol , from 2 % solutions of tar- taric , oxalic , citric , and trihydroxyglutaric acids at pH values from 1 to 12.7 The curves for the ...
... Niobium on pH We studied the extraction of niobium by 4 % 8 - hydroxy- quinoline in isopentyl alcohol , from 2 % solutions of tar- taric , oxalic , citric , and trihydroxyglutaric acids at pH values from 1 to 12.7 The curves for the ...
Trang 1422
... niobium and tantalum by various organic solvents at different pH values : 1 ) isopentyl alcohol ; 2 ) n - butyl alcohol . Influence of Citric Acid Concentration on the Degree of Extraction of Niobium The quantity of complex - forming ...
... niobium and tantalum by various organic solvents at different pH values : 1 ) isopentyl alcohol ; 2 ) n - butyl alcohol . Influence of Citric Acid Concentration on the Degree of Extraction of Niobium The quantity of complex - forming ...
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absorption acid Akad alcohol alkali metal alloys ammonium analysis anion calculated carbon cation cerium Chem chemical chloride composition compounds concentration containing corresponding crystallisation crystals curves decomposition determined dissociation distribution constant endothermic equilibrium diagram eutectic EXPERIMENTAL extraction filtered formed fusion diagram H₂O hafnium heating hydrogen hydrolysis hydroxide increase Inorg ionic strength ions isomolar series isotherms kcal Khim lanthanum lattice ligand liquid melting methanol method mixture molar ratio mole molecules NaCl Nauk SSSR neodymium Neorg niobium nitrate obtained optical density oxalate oxalic acid oxide peritectic phosphate phthalocyanines potassium precipitate prepared reaction reciprocal system resin Russ salicylate salt saturated scandium shows sodium solid phase solid solutions soln solu solubility solvent specimens spectra stable studied sulphate Table temperature ternary system thallium thermal Thermogram thorium tion uranium uranyl values X-ray Zhur zirconium ZrO2